2.2.2. Island Classification

Referring to the 908 Special Project and "Law of the People's Republic of China on the Protection of Islands", according to their results of the classification of islands by geological composition, the islands were classified into three types: bedrock islands, volcanic islands, and sedimentary islands (Table 1). Furthermore, while classified, two or more islands connected via aquaculture pond(s) were deemed as one island.


**Table 1.** Island classification and image characteristics (Data resources: *Google Earth*).
